Air purifying device



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" c. w. JoHNsoN l- AIR PURIFYINGN DEVICE Filed March 2s, 1935 6% "l T f 6 mw fw f M lmwewIf/LQW y w Aor'n/egs Patented Feb. 18, 1936 PATENT OFFICE AIR PURIFYING DEVICE Carl W. Johnson, Minneapolis, Minn., assignor to Heywood Paper Box & Manufacturing Company, Minneapolis, Minn., a corporation of Minnesota Application March 28, 1935, Serial No. 13,488

1 Claim.

My invention relates to air purifying devices and particularly to combination air washing and deodorizing apparatus.

Air compressors are quite commonly used in connection with beer dispensing apparatus and the air received and compressed by such compressors is commonly drawn from the surrounding atmosphere. In many locations the atmosphere from which the air is drawn is more or less permeated with tobacco smoke and other impurities which are transmitted through the compressor and dispensing apparatus to the beer dispensed.

It is an object of my invention to provide simple, rugged, compact and inexpensive apparatus for both washing and deodorizing air received by air compressors or other apparatus.

These and other objects and advantages of the present invention will more fully appear from the following description, made in connection with the accompanying drawing, wherein like reference characters refer to the same or similar parts throughout the various views, and, in which,

Fig. 1 is a side view of my device broken away in portions to show the internal parts in vertical section; and

Fig, 2 is a horizontal sectional view taken along the line 2-2 of Fig. 1 as indicated by the arrows.

Referring to the drawing, a receptacle or jar 5, preferably formed of glass, has an externally -screw-threaded neck portion 5a and a sealing ring abutting shoulder 5b immediately below the neck portion.

An internally screw-threaded cap 6 is tted on the neck 5a of the jar 6 with a sealing ring 'l of rubber or other suitable material interposed between the lower edge of the cap 6 and the sealing shoulder 5b oi the jar. The jar 5 and cap 6 obviously dene a closed chamber.

Y A hollow cylindrical body 8 is formed integrally with and in depending relation to the cap 6 so as to project downwardly into the interior of the jar 5. The bottom wall of the body 8 is provided with an internally screw-threaded centrally located apertured portion, the aperture of which is closed by an externally screw-threaded plug 9 having a polygonal wrench-receiving recess or socket 9a in its lower side. The remaining portion of the bottom wall of the body 8 is `provided with a pluralits7 of spaced apertures 8a comprising restricted ports.

The central portion of the cap 6 comprises the top wall of the chamber provided within the hollow body 8 and has an integral boss 6a project-V (Cl. 18S-15) ing a substantial distance upwardly therefrom in a central location to form a connection element on which the end of a conduit such as a. rubber tube or the like may be placed. The bossed portion of the cap E is provided with an aperture 6b communicating with the hollow interior of the body 8.

A neck 6c surmounted by an enlarged member or knob 6d is formed integrally with the cap 6 to project upwardly from' an eccentrically located part oi the central portion of the cap 6 as shown. The knob 6c has an aperture 6e therein extending radially and horizontally outwardly from the center of the knob and 4at its inner end joining the upper end of an aperture 6f disposed axially of the neck 6c and through the cap 6. The lower portion of the aperture 6j is of increased diameter and the upper end of a tube I0 is secured in this portion of increased diameter.

The tube l0 extends downwardly from its point of attachment with the cap 6 through a suitable aperture in the bottom wall of the body 8 and continues downwardly to a point a'short distance above the bottom of the jar 5 whereat the tube Il] is bent to form a single-turn, horizontally disposed circular coil IUa. The end lllb of the coil Illa is closed and the upper side of the circular coil Illa is provided with .a series of spaced apertures Ic comprising restricted ports.

In normal use of my air purifying device the connection element 6a is connected to the air inlet port of an air compressor (not shown) by means of a suitable conduit such as a rubber tube T and the apertured knob 6d serves as an inlet for air from the surrounding atmosphere. The chamber within the body 8 comprises a deodorizing chamber and is lled with odor-absorbing mate-rial Il such as charcoal. The lower portion of the jar 5 comprises an air washing chamber and is lled with water l2 up to a level intermediate between the coil Illa and the lower end of the body 8.

Suction created by the air compressor previously mentioned causes air to enter the apertures Se and Gf in the knob 6d and neck 6c, travel downwardly through the tube lil and emerge from the coil lct through the apertures |00 into the water in the lower portion of the jar 5. 'I'he air, after emerging from the apertures Ic, travels upwardly through the water in the form of streams of very small bubbles and, during this travel, is thoroughly washed and moistened by intimate Contact with the water. The air lib'- erated from the bubbles upon reaching the surface of the water is drawn upwardly and through the apertures 8a into the material lled interior of the hollow body 8. Here, the air travels through restricted tortuous paths between the various particles of odor-absorbing material within the body 8 and during this travel is deodorized due to intimate contact With the deodorizing material. The air, after being Washed and deodorized in my device, issues from the connection element 6a of the device and is drawn into the compressor through a suitable conduit T connected as previously explained.

It should be obvious that the interior portions of my device are readily accessible for placing fresh supplies of water and deodorizing material therein and for cleaning purposes.

It is apparent that I have invented a novel, improved, simple, rugged, inexpensive and effective combination air Washing and deodorizing device.

It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts Without departing from the scope of the present invention.

What is claimed isi- In an air purifying device, an open topped chamber, a closure cap closing the top of said chamber, a second chamber formed integrally with said cap and depending therefrom a moderate distance into said first mentioned chamber, the upper Wall of said second chamber and the central portion of said cap being common, the lower Wall of said second chamber having restricted ports therein, said cap being provided With an air outlet communicating with the upper portion of said second chamber, said second chamber being at least partially lled with pieces of odor-absorbing material, said first chamber being adapted for lling thereof with an air Washing liquid up to a level somewhat below the bottom of said second chamber, an air inlet in said cap, an air containing element disposed below the surface of liquid placed in said lower portion and being provided with restricted ports, and a conduit sup-ported by said cap and connecting said air inlet to said air containing element.

CARL W. JOHNSON. 

